I have a Canon 10D. I'm not sure exactly how old it is because it was given to me by my father who was a Washington Post photographer. Obviously this camera was used in the field for many years so it's taken a beating. Now, I've had it for about year and I'm starting to notice that my pictures aren't really as crisp as they used to be. At first I thought it was the lens having a focus issue but I've tried a number of lenses and it always appears just a touch out of focus. So my question...does this sound like this would be caused by the cameras deterioration? Or something that is fixable? I did some web searching to see if I could find any information on this problem and they only thing I came up with was a lot of cases of shutters going bad over time. Are there any other signs that a cameras life is coming to an end?